When you're at the perfect drunken state when all you can think about is satisfying your balls. Before this state, average girls are simply average and you don't want to fuck them. When you're after this state, you want to fuck everyone and your balls cooperate but your dick won't

Dave: Hey Jake, you see Daniel over there with that beat girl?
Jake: Yeah man, he's trying to get lucky tonight
Dave: He better hurry, because he's perfectly balls drunk right now. If he waits any longer he has no shot